janewilliams20

The fold-up Tablet P. I haven't yet seen one for real, but I'm reading reviews.
http://reviews.cnet.co.uk/ipad-and-tablets/sony-tablet-p-review-50004946/
http://www.itpro.co.uk/635950/sony-tablet-p-review-first-look
http://reviews.cnet.co.uk/ipad-and-tablets/sony-tablet-p-review-50004946/

The criticisms so far seem to be its limits on playing videos (only uses one of the screens) and on gameplay (no physical controls, only on-screen). Neither of these are my man purpose for getting it.
As an e-reader, apparently it's not as crisp as the Kindle. I'd better try it and see.
Keyboard - comparable with a laptop? Sounds good!
Given my intended use, I don't think the admittedly low storage is likely to be an issue.

One query remains unanswered - can I edit documents on it?

Edit: the Sony forum provided answers again. There's a couple of recommended Android apps for the purpose:  "Documents To Go" or "Quickoffice Pro". Neither are free, though there's a free read-only version of DtG.

I mentioned randomly in a comment somewhere that a few years back, I'd fallen in love with a beautiful (but expensive) Sony Vaio. I did a quick search, noted that the original ran Win Vista (aargh!) and while still available, was pretty clunky by today's standards. So I went over to the Sony website and browsed, finding only great big things that waste space on irritating touchpads that move the cursor at random whenever my thumbs stray into a natural typing position. Being optimistic, I went over to the forum and asked. Yes, I could get myself an original Vaio P, running Win 7, and it would be supported. Or I could get this....
http://www.sony.co.uk/product/sony-tablet-p
Fortunately the "keyboard" on that, being perfectly smooth, is probably drool-resistant., That on my big PC is not so lucky. I'm checking details, but that would appear to do everything I could want and more, in a smaller package than I'd dreamed of and at half the price I'd considered for the original Vaio. I may have to go for its big brother the Tablet S, but at a "massive" 7" by 9.5" and 600g, I hope not.